Employer Sponsored Benefit Plan (Additional Information) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Tax Benefit	$ (1,409)	$ (55)	$ (1,595)
Defined Contribution Plan:
Employer Contributions to 401(k) Plan	$ 2,500	2,300	2,100
Matching contribution, percent of employees' gross pay	5.00%
Matching contribution, percent of employees' gross pay, first 3%	100.00%
Matching contribution, percent of employees' gross pay, remaining 2%	50.00%
Domestic Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Pension plan liability	$ 13,048	12,668
Accumulated other comprehensive loss, net of tax	19,689	17,313
Increase in OCI pension adjustment	2,400	100
Recognized net gain (loss) due to settlements	0	$ 0	(4,914)
Tax Benefit			$ 1,900
Future amortization of gain (loss)	$ (1,100)
Discount rate, benefit obligation	4.21%	4.56%
Expected return on plan assets, benefit obligation	6.30%	7.00%
Foreign Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Pension plan liability	$ 1,500	$ 1,400
Accumulated other comprehensive loss, net of tax	400	$ 400
Minimum | Domestic Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in next fiscal year	3,000
Maximum | Domestic Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in next fiscal year	$ 4,000